hi fedge!
any pix we could see as it is installed in your 10g?
my tribe belongs to the big-time cheapo on this earth
and
i am also into experimenting CO2 diffusers...right now i have 2 DIY CO2 bottles in my 30g..one diffuses thru an airstone (my control) right in the mouth of my hob filter and the other one diffuses thru an airstone and thru a mesh siliconed at the bottom of a 'bottomless' (i sawed it off!) 3" planting clay pot (my latest experiment)...the mesh is a recycled bag from the AC mini carbon insert..just one layer...siliconed at the inside of the pot...lucky me, i found a stainless steel ring that is bigger than the hole at the bottom of the pot that could hold the mesh snugly before i applied silicone...drilled a hole 3/4" close to the top of the pot for the hose to come in and plugged the hose with a stone diffuser (it also kinda locked the hose in its place)...inverted the whole assembly at the bottom of my 30g and it still seems to be working fine after 5 weeks...ph 7.2 during photosynthesis period
many thanks for your info about the epoxy coated window screen...i will try to make my second diffuser replacing the mesh with that kind of screen...and oh btw, attaching the mesh from the inside wall of your cylinder might solve the problem of sharpness and esthetics especially if you use silicone...the only odd thing with claypots is i can't see thru it unlike your clear cylinder
